All I saw were seamless 40 gallon acrylic for around $400+ not including drilling, shipping, and anything else ya need. I would try craigslist or maybe a LFS that has a few display tanks to liquidate, I know I have a few fish stores in my area going out of business, gonna hit them up in the next few days to see what goodies I can get..
you can go to my LFS.Wets pets and friends in Mcmurray PA.i got a 125 gal. predrilled with overflows 435$ from them.they have specials somtimes to, like ballon pops pop a ballon and see how much percent you got off
the only way I would get an acyrillic tank is if it was SO much larger than prefab glass ones, like a custom 600 that I am looking at. The price tag and weight are much less than glass. Up to 265, go with all glass.
I would not do a reef with an acryllic tank. Reef and Biff are right on.